1.) The client is crazy busy with numerous projects.
or
2.) They are afraid a phone call will take up too much of their precious time.
or
3.) Your voice mail message is not giving the client an important enough reason to return your call.
or
4.) They feel email is more convenient that returning a phone call.

Three tips to get your calls returned:

Know what you want as a result of your voicemail message, in addition to a return phone call.

Organize your message so that you state the most important and attention-getting information first, since you may be cut off at any time.

Don’t leave a message lasting more than 30 seconds because most of us have very short attention spans.

A recent survey by ExactTarget.com was revealing.

From MarketingLand.com:

“ExactTarget asked almost 1,500 US online consumers (age 15 and up) about how they prefer to get permission-based marketing messages and a whopping 77 percent said email — a number that dwarfs all other options in the survey. Direct mail was second at nine percent and text messaging was third at five percent.”

You may not consider your voicemail messages to be marketing messages, yet this survey is still relevant as it applies to communicating with clients using a method they prefer.